Turn the keyboard locking screw located in the middle of the keyboard so that it is parallel to the space bar. A half turn from parallel to parallel will unlock it. Another half turn will lock it again.
Pull the keyboard release tabs toward you and lift up on the keyboard until it pops free.
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PowerBook G4 Titanium DVI RAM Replacement
Step 3
Rest the keyboard face down on the trackpad area.
Disconnect the keyboard connector from the logic board.